The 1934-D Mercury dime with the "S" mintmark is fairly common and is worth its silver value. As of now, the coin is valued for around $3 to $5 based on its silver content. Condition and rarity can also affect the value, so it's best to consult with a coin dealer or appraiser for an accurate assessment.
The coin is still in circulation and is only face value.
Spend it, the coin is still in circulation
With no mint mark next to Monticello, or a "D", it's worth about a dime. If there's a small "S", it's worth about a quarter.
1941 Winged Liberty Head/Mercury Dime: With no mint mark, in fine condition is worth $0.70, uncirculated is worth $17.00, proof is worth $175.00. With D mint mark, in fine condition is worth $0.70, uncirculated is worth $17.00. With S mint mark, in fine condition is worth $0.70, uncirculated is worth $20.00.
August 5, 2009 The mint mark for this Barber dime is located on the reverse side of the coin. There is none on the obverse. If there is a "D" on the face it has been added after it left the mint. Marks such as this devalue a coin and in this case the dime would be worth bullion price which is $1.06 today.
With no D mint mark or no mint mark at all it's from Philadelphia.
If the mint mark is D or S the dime could be worth from $2.50 to $90.00 depending on the condition. If not, then it's just worth the price of the silver unless it's in uncirculated condition.
The 1916-D Mercury dime is the key-date coin of the series. Genuine examples of a circulated coin have values from $900.00 to more then $10,000.00.
The P indicates it was made at the Philadelphia Mint, a D would indicate it was made at the Denver mint.It's worth about about 10 cents
With no mint mark and in average condition, about a dime. With a "D", about a quarter. With an "S", around 35¢
A 1959-D dime is 90% silver. It's very common and worth about $2.00.
Normally the question has to be asked "WHICH mint mark?". However the only 1934 cents with a mint mark came from Denver so your coin has a D below the date. Most circulated 1934-D cents are only worth a small premium - 15¢ or so in worn condition up to a half-dollar with only moderate wear. However nice 1934-D cents in almost-uncirculated or uncirculated condition are scarcer and can be worth $5 to $10 depending on how well-struck they are.